﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data.SqlClient;
using System.Data;
using NPOI.HSSF.UserModel;
using NPOI.SS.UserModel;
using NPOI.SS.Util;
using NPOI.HSSF.Util;
using NPOI.POIFS.FileSystem;
using NPOI.HPSF;
using System.IO;

public partial class BaoCaoCongNoThu : System.Web.UI.Page
{
    SqlParameter[] p;
    clsXuLy ex = new clsXuLy();
    string frmName = "frmBaoCaoCongNoThu";
    static int f_SuDung = 0, f_Them = 0, f_Sua = 0, f_Xoa = 0, f_XemTatCa = 0, f_InBaoCao = 0;
    public string Header = System.Configuration.ConfigurationSettings.AppSettings["Header"].ToString();
    static DataTable dt;
    static int PageNumber = 6;
    static int CurrentPage = 1;
    static DataTable dtPrint;
    protected void Page_Load(object sender, EventArgs e)
    {
        if (string.IsNullOrEmpty(Convert.ToString(Session["user"])) || string.IsNullOrEmpty(Convert.ToString(Session["IDUser"])))
            Response.Redirect("Default.aspx");
        if (!IsPostBack)
        {
            string idnguoidung = Session["IDUser"].ToString();
            //  string sql = "select SuDung,Them,Sua,Xoa,InBaoCao,XemTatCa from XDAPhanQuyen where IDnguoidung='" + idnguoidung + "' and tag='" + frmName + "'";
            p = new SqlParameter[2];
            p[0] = new SqlParameter("@idnguoidung", idnguoidung);
            p[0].SqlDbType = SqlDbType.NVarChar;
            p[1] = new SqlParameter("@tag", frmName);
            p[1].SqlDbType = SqlDbType.NVarChar;
            DataTable dt2 = ex.GetData("sp_xdacacchucnang_list", p);
            if (dt2.Rows.Count > 0)
            {
                f_SuDung = int.Parse(dt2.Rows[0]["SuDung"].ToString());
                f_Them = int.Parse(dt2.Rows[0]["Them"].ToString());
                f_Sua = int.Parse(dt2.Rows[0]["Sua"].ToString());
                f_Xoa = int.Parse(dt2.Rows[0]["Xoa"].ToString());
                f_InBaoCao = int.Parse(dt2.Rows[0]["InBaoCao"].ToString());
                f_XemTatCa = int.Parse(dt2.Rows[0]["XemTatCa"].ToString());
            }
            if (f_SuDung.Equals(1))
            {
                btnCancel_Click(sender, e);

                for (int i = 1; i <= 12; i++)
                {
                    dlThang.Items.Add(new ListItem("Tháng " + i.ToString(), i.ToString()));
                }
                dlThang.Items.Insert(0, new ListItem("Theo thời gian", ""));
                dlThang.SelectedIndex = 0;

                int year1 = DateTime.Now.Year - 3;
                int year2 = DateTime.Now.Year;
                for (int i = year2; i >= year1; i--)
                {
                    dlNam.Items.Add(new ListItem("Năm " + i.ToString(), i.ToString()));
                }
                dlNam.SelectedValue = year2.ToString();

                txtTuNgay.Text = DateTime.Now.ToString("dd/MM/yyyy");
                txtDenNgay.Text = DateTime.Now.ToString("dd/MM/yyyy");
                dlNam.Visible = false;
                LoadNCC();
            }
            else
                gstGetMess("Bạn không có quyền xem trang này", "Home.aspx");
        }
    }

    protected void btnCancel_Click(object sender, EventArgs e)
    {


        btnFirst.Visible = false;
        btnNext.Visible = false;
        btnPre.Visible = false;
    }
    protected void GV_RowCreated(object sender, GridViewRowEventArgs e)
    {
        if (e.Row.RowType == DataControlRowType.Header)
        {
            GridView HeaderGrid = (GridView)sender;
            GridViewRow HeaderGridRow = new GridViewRow(0, 0, DataControlRowType.Header, DataControlRowState.Insert);
            HeaderGridRow.Height = 20;
            HeaderGridRow.HorizontalAlign = HorizontalAlign.Center;
            TableCell HeaderCell = new TableCell();



            HeaderGridRow.Cells.Add(HeaderCell);
            HeaderCell = new TableCell();
            HeaderCell.Text = "";
            HeaderCell.ColumnSpan = 1;
            HeaderGridRow.Cells.Add(HeaderCell);
            HeaderCell = new TableCell();
            HeaderCell.Text = "Số dư kì trước";
            HeaderCell.ColumnSpan = 3;
            HeaderGridRow.Cells.Add(HeaderCell);

            HeaderCell = new TableCell();
            HeaderCell.Text = "Số dư kì này có VAT";
            HeaderCell.ColumnSpan = 4;
            HeaderGridRow.Cells.Add(HeaderCell);
            HeaderCell = new TableCell();
            HeaderCell.Text = "Số dư kì này không VAT";
            HeaderCell.ColumnSpan = 4;
            HeaderGridRow.Cells.Add(HeaderCell);


            HeaderCell = new TableCell();
            HeaderCell.Text = "Thanh toán kì trước";
            HeaderCell.ColumnSpan = 3;
            HeaderGridRow.Cells.Add(HeaderCell);

            HeaderCell = new TableCell();
            HeaderCell.Text = "Thanh toán kì này";
            HeaderCell.ColumnSpan = 3;
            HeaderGridRow.Cells.Add(HeaderCell);

            HeaderCell = new TableCell();
            HeaderCell.Text = "Số dư còn lại";
            HeaderCell.ColumnSpan = 3;
            HeaderGridRow.Cells.Add(HeaderCell);

            HeaderCell = new TableCell();
            HeaderCell.Text = "Thành tiền hàng";
            HeaderCell.ColumnSpan = 3;
            HeaderGridRow.Cells.Add(HeaderCell);






            GV.Controls[0].Controls.AddAt(0, HeaderGridRow);
        }
    }
    protected void btnFirst_Click(object sender, EventArgs e)
    {
        CurrentPage = 1;
        p = new SqlParameter[4];
        p[0] = new SqlParameter("@PageNumber", CurrentPage);
        p[0].SqlDbType = SqlDbType.Int;
        p[1] = new SqlParameter("@RowspPage", PageNumber);
        p[1].SqlDbType = SqlDbType.Int;
        p[2] = new SqlParameter("@TuNgay", ex.GetNgayThang(hdTuNgay.Value));
        p[2].SqlDbType = SqlDbType.SmallDateTime;
        p[3] = new SqlParameter("@DenNgay", ex.GetNgayThang(hdDenNgay.Value));
        p[3].SqlDbType = SqlDbType.SmallDateTime;
        dt = ex.GetData("sp_BaoCaoChotCongNoThu_TatCa_TheoThoiGian", p);
        GV.DataSource = dt;
        GV.DataBind();
        p = new SqlParameter[2];
        p[0] = new SqlParameter("@TuNgay", ex.GetNgayThang(hdTuNgay.Value));
        p[0].SqlDbType = SqlDbType.SmallDateTime;
        p[1] = new SqlParameter("@DenNgay", ex.GetNgayThang(hdDenNgay.Value));
        p[1].SqlDbType = SqlDbType.SmallDateTime;
        dt = ex.GetData("sp_BaoCaoChotCongNoThu_TatCa_TheoThoiGian_Footer", p);
        LoadFooter();
        btnPre.Enabled = true;
        btnNext.Enabled = true;
        btnFirst.Enabled = true;
    }
    protected void btnPre_Click(object sender, EventArgs e)
    {
        if (CurrentPage > 1)
        {
            CurrentPage--;
            btnPre.Enabled = true;
            btnNext.Enabled = true;
            btnFirst.Enabled = true;

            p = new SqlParameter[4];
            p[0] = new SqlParameter("@PageNumber", CurrentPage);
            p[0].SqlDbType = SqlDbType.Int;
            p[1] = new SqlParameter("@RowspPage", PageNumber);
            p[1].SqlDbType = SqlDbType.Int;
            p[2] = new SqlParameter("@TuNgay", ex.GetNgayThang(hdTuNgay.Value));
            p[2].SqlDbType = SqlDbType.SmallDateTime;
            p[3] = new SqlParameter("@DenNgay", ex.GetNgayThang(hdDenNgay.Value));
            p[3].SqlDbType = SqlDbType.SmallDateTime;
            dt = ex.GetData("sp_BaoCaoChotCongNoThu_TatCa_TheoThoiGian", p);
            GV.DataSource = dt;
            GV.DataBind();
            p = new SqlParameter[2];
            p[0] = new SqlParameter("@TuNgay", ex.GetNgayThang(hdTuNgay.Value));
            p[0].SqlDbType = SqlDbType.SmallDateTime;
            p[1] = new SqlParameter("@DenNgay", ex.GetNgayThang(hdDenNgay.Value));
            p[1].SqlDbType = SqlDbType.SmallDateTime;
            dt = ex.GetData("sp_BaoCaoChotCongNoThu_TatCa_TheoThoiGian_Footer", p);
            LoadFooter();
        }
        else
        {
            btnFirst.Enabled = false;
            btnPre.Enabled = false;
            btnNext.Enabled = true;
        }
    }
    protected void btnNext_Click(object sender, EventArgs e)
    {
        CurrentPage++;
        p = new SqlParameter[4];
        p[0] = new SqlParameter("@PageNumber", CurrentPage);
        p[0].SqlDbType = SqlDbType.Int;
        p[1] = new SqlParameter("@RowspPage", PageNumber);
        p[1].SqlDbType = SqlDbType.Int;
        p[2] = new SqlParameter("@TuNgay", ex.GetNgayThang(hdTuNgay.Value));
        p[2].SqlDbType = SqlDbType.SmallDateTime;
        p[3] = new SqlParameter("@DenNgay", ex.GetNgayThang(hdDenNgay.Value));
        p[3].SqlDbType = SqlDbType.SmallDateTime;
        dt = ex.GetData("sp_BaoCaoChotCongNoThu_TatCa_TheoThoiGian", p);
        GV.DataSource = dt;
        GV.DataBind();
        p = new SqlParameter[2];
        p[0] = new SqlParameter("@TuNgay", ex.GetNgayThang(hdTuNgay.Value));
        p[0].SqlDbType = SqlDbType.SmallDateTime;
        p[1] = new SqlParameter("@DenNgay", ex.GetNgayThang(hdDenNgay.Value));
        p[1].SqlDbType = SqlDbType.SmallDateTime;
        dt = ex.GetData("sp_BaoCaoChotCongNoThu_TatCa_TheoThoiGian_Footer", p);
        LoadFooter();
        if (GV.Rows.Count.Equals(0))
        {
            btnPre.Enabled = true;
            btnNext.Enabled = false;
        }
        else
        {
            btnPre.Enabled = true;
            btnNext.Enabled = true;
        }
        btnFirst.Enabled = true;
    }
    private void LoadFooter()
    {
        string[] field = { "tongdukitruoc","tienhang",
                         "tongthanhtoankitruoc","tongthanhtoankinay", "tongduconlai","thanhtienhang"};
        if (dt.Rows.Count > 0)
        {
            GV.FooterRow.Cells[1].Text = "Tổng cộng";
            GV.FooterRow.Cells[1].HorizontalAlign = HorizontalAlign.Center;
            for (int k = 2; k < 8; k++)
            {
                GV.FooterRow.Cells[k].Text = ConvertDecimal(double.Parse(dt.Compute("sum(" + field[k - 2] + ")", "").ToString()));
            }


        }
    }
    string ConvertDecimal(double s)
    {
        string q = "";
        if (s.ToString().Contains("."))
        {
            double x = double.Parse(s.ToString().Substring(0, s.ToString().IndexOf('.')));
            q = (x != 0 && x > 999) ? string.Format("{0:0,0}", x) : x.ToString();
            q += s.ToString().Substring(s.ToString().IndexOf('.'));
        }
        else
            q = (s != 0 && s > 999) ? string.Format("{0:0,0}", s) : s.ToString();
        return q;
    }

    protected void dlThang_SelectedIndexChanged(object sender, EventArgs e)
    {
        if (dlThang.SelectedIndex.Equals(0))
        {
            txtTuNgay.Visible = true;
            txtDenNgay.Visible = true;
            dlNam.Visible = false;
        }
        else
        {
            txtTuNgay.Visible = false;
            txtDenNgay.Visible = false;
            dlNam.Visible = true;
        }
        LoadNCC();
    }
    protected void btnXem_Click(object sender, EventArgs e)
    {
        getDate();
        if (drnhacungcap.SelectedIndex == 0)
        {
            p = new SqlParameter[2];

            
           
            p[0] = new SqlParameter("@TuNgay", ex.GetNgayThang(hdTuNgay.Value));
            p[0].SqlDbType = SqlDbType.SmallDateTime;
            p[1] = new SqlParameter("@DenNgay", ex.GetNgayThang(hdDenNgay.Value));
            p[1].SqlDbType = SqlDbType.SmallDateTime;
            GV.DataSource = ex.GetData("sp_BaoCaoChotCongNoPhaiThu_TatCa_TheoThoiGian", p);
            GV.DataBind();
            p = new SqlParameter[2];
            p[0] = new SqlParameter("@TuNgay", ex.GetNgayThang(hdTuNgay.Value));
            p[0].SqlDbType = SqlDbType.SmallDateTime;
            p[1] = new SqlParameter("@DenNgay", ex.GetNgayThang(hdDenNgay.Value));
            p[1].SqlDbType = SqlDbType.SmallDateTime;
            dt = ex.GetData("sp_BaoCaoChotCongNoPhaiThu_TatCa_TheoThoiGian_Footer", p);
            LoadFooter();
            GV.Visible = true;
            btnPre.Visible = false;
            btnNext.Visible = false;
            btnFirst.Visible = false;
        }
        else
        {
            p = new SqlParameter[3];
            p[0] = new SqlParameter("@TuNgay", ex.GetNgayThang(hdTuNgay.Value));
            p[0].SqlDbType = SqlDbType.SmallDateTime;
            p[1] = new SqlParameter("@DenNgay", ex.GetNgayThang(hdDenNgay.Value));
            p[1].SqlDbType = SqlDbType.SmallDateTime;


            p[2] = new SqlParameter("@KhachHang", ex.GetGuid(drnhacungcap.SelectedValue));
            p[2].SqlDbType = SqlDbType.UniqueIdentifier;
            GV.DataSource = ex.GetData("sp_BaoCaoChotCongNoPhaiThu_TatCa_TheoThoiGian_TimKiem", p);
            GV.DataBind();
            p = new SqlParameter[3];
            p[0] = new SqlParameter("@TuNgay", ex.GetNgayThang(hdTuNgay.Value));
            p[0].SqlDbType = SqlDbType.SmallDateTime;
            p[1] = new SqlParameter("@DenNgay", ex.GetNgayThang(hdDenNgay.Value));
            p[1].SqlDbType = SqlDbType.SmallDateTime;
            p[2] = new SqlParameter("@KhachHang", ex.GetGuid(drnhacungcap.SelectedValue));
            p[2].SqlDbType = SqlDbType.UniqueIdentifier;
            dt = ex.GetData("sp_BaoCaoChotCongNoPhaiThu_TatCa_TheoThoiGian_TimKiem", p);
            LoadFooter();
            GV.Visible = true;

        }

    }
    public void getDate()
    {
        if (dlThang.SelectedIndex.Equals(0))
        {
            hdTuNgay.Value = txtTuNgay.Text;
            hdDenNgay.Value = txtDenNgay.Text;
        }
        else
        {
            txtTuNgay.Text = "1/" + dlThang.SelectedValue + "/" + dlNam.SelectedValue;
            txtDenNgay.Text = GetLastDayOfMonth(int.Parse(dlThang.SelectedValue)).ToString("dd/MM/yyyy");
            hdTuNgay.Value = txtTuNgay.Text;
            hdDenNgay.Value = txtDenNgay.Text;
        }
    }
    public DateTime GetLastDayOfMonth(int iMonth)
    {
        DateTime dtResult = new DateTime(int.Parse(dlNam.SelectedValue), iMonth, 1);
        dtResult = dtResult.AddMonths(1);
        dtResult = dtResult.AddDays(-(dtResult.Day));
        return dtResult;
    }
    protected void Button1_Click(object sender, EventArgs e)
    {
        CurrentPage = 1;
        getDate();
        p = new SqlParameter[4];
        p[0] = new SqlParameter("@TuNgay", ex.GetNgayThang(hdTuNgay.Value));
        p[0].SqlDbType = SqlDbType.SmallDateTime;
        p[1] = new SqlParameter("@DenNgay", ex.GetNgayThang(hdDenNgay.Value));
        p[1].SqlDbType = SqlDbType.SmallDateTime;

        p[2] = new SqlParameter("@PageNumber", CurrentPage);
        p[2].SqlDbType = SqlDbType.Int;
        p[3] = new SqlParameter("@RowspPage", PageNumber);
        p[3].SqlDbType = SqlDbType.Int;

        GV.DataSource = ex.GetData("sp_BaoCaoCongNoThu_TatCa_TheoThoiGian", p);
        GV.DataBind();
        LoadFooter();
        Button2.Enabled = false;
        Button3.Enabled = true;
        Button1.Enabled = false;
    }
    protected void Button2_Click(object sender, EventArgs e)
    {
        if (CurrentPage > 1)
        {
            CurrentPage--;
            Button2.Enabled = true;
            Button3.Enabled = true;
            Button1.Enabled = true;

            getDate();
            p = new SqlParameter[4];
            p[0] = new SqlParameter("@TuNgay", ex.GetNgayThang(hdTuNgay.Value));
            p[0].SqlDbType = SqlDbType.SmallDateTime;
            p[1] = new SqlParameter("@DenNgay", ex.GetNgayThang(hdDenNgay.Value));
            p[1].SqlDbType = SqlDbType.SmallDateTime;

            p[2] = new SqlParameter("@PageNumber", CurrentPage);
            p[2].SqlDbType = SqlDbType.Int;
            p[3] = new SqlParameter("@RowspPage", PageNumber);
            p[3].SqlDbType = SqlDbType.Int;
            GV.DataSource = ex.GetData("sp_BaoCaoCongNoThu_TatCa_TheoThoiGian", p);
            GV.DataBind();
            LoadFooter();
        }
        else
        {
            Button1.Enabled = false;
            Button2.Enabled = false;
            Button3.Enabled = true;
        }
    }
    protected void Button3_Click(object sender, EventArgs e)
    {
        CurrentPage++;
        getDate();
        p = new SqlParameter[4];
        p[0] = new SqlParameter("@TuNgay", ex.GetNgayThang(hdTuNgay.Value));
        p[0].SqlDbType = SqlDbType.SmallDateTime;
        p[1] = new SqlParameter("@DenNgay", ex.GetNgayThang(hdDenNgay.Value));
        p[1].SqlDbType = SqlDbType.SmallDateTime;

        p[2] = new SqlParameter("@PageNumber", CurrentPage);
        p[2].SqlDbType = SqlDbType.Int;
        p[3] = new SqlParameter("@RowspPage", PageNumber);
        p[3].SqlDbType = SqlDbType.Int;

        GV.DataSource = ex.GetData("sp_BaoCaoCongNoThu_TatCa_TheoThoiGian", p);
        GV.DataBind();
        LoadFooter();
        if (GV.Rows.Count.Equals(0))
        {
            Button2.Enabled = true;
            Button3.Enabled = false;
        }
        else
        {
            Button2.Enabled = true;
            Button3.Enabled = true;
        }
        Button1.Enabled = true;
    }
    public void LoadNCC()
    {
        getDate();
        p = new SqlParameter[2];
        p[0] = new SqlParameter("@TuNgay", ex.GetNgayThang(hdTuNgay.Value));
        p[0].SqlDbType = SqlDbType.SmallDateTime;
        p[1] = new SqlParameter("@DenNgay", ex.GetNgayThang(hdDenNgay.Value));
        p[1].SqlDbType = SqlDbType.SmallDateTime;
        drnhacungcap.Items.Clear();
        drnhacungcap.DataSource = ex.GetData("sp_BaoCaoChotCongNoThu_TatCa_KhachHangList", p);
        drnhacungcap.DataBind();
        drnhacungcap.Items.Insert(0, new ListItem("--Chọn khách hàng--", ""));
        drnhacungcap.SelectedIndex = 0;
    }
    private void gstGetMess(string gstMess, string gstLink)
    {
        if (gstLink == "")
            ScriptManager.RegisterClientScriptBlock(this, this.GetType(), " ", "alert('" + gstMess + "')", true);
        else
            ScriptManager.RegisterClientScriptBlock(this, this.GetType(), " ", "alert('" + gstMess + "');window.location.href='" + gstLink + "'", true);

    }
    protected void btnIn_Click(object sender, EventArgs e)
    {
        if (f_InBaoCao.Equals(1))
        {
            getDate();
            if (drnhacungcap.SelectedIndex == 0)
            {
                p = new SqlParameter[2];
                p[0] = new SqlParameter("@TuNgay", ex.GetNgayThang(hdTuNgay.Value));
                p[0].SqlDbType = SqlDbType.SmallDateTime;
                p[1] = new SqlParameter("@DenNgay", ex.GetNgayThang(hdDenNgay.Value));
                p[1].SqlDbType = SqlDbType.SmallDateTime;
                dtPrint = ex.GetData("sp_BaoCaoChotCongNoPhaiThu_TatCa_TheoThoiGian_Print", p);

            }
            else
            {
                p = new SqlParameter[3];
                p[0] = new SqlParameter("@TuNgay", ex.GetNgayThang(hdTuNgay.Value));
                p[0].SqlDbType = SqlDbType.SmallDateTime;
                p[1] = new SqlParameter("@DenNgay", ex.GetNgayThang(hdDenNgay.Value));
                p[1].SqlDbType = SqlDbType.SmallDateTime;


                p[2] = new SqlParameter("@KhachHang", ex.GetGuid(drnhacungcap.SelectedValue));
                p[2].SqlDbType = SqlDbType.UniqueIdentifier;
                dtPrint = ex.GetData("sp_BaoCaoChotCongNoPhaiThu_TatCa_TheoThoiGian_TimKiem", p);



            }
            PrintNPOI(dtPrint);
        }
        else
            gstGetMess("Bạn không có quyền in báo cáo này", "");
    }

    void PrintNPOI(System.Data.DataTable dt)
    {
        var workbook = new HSSFWorkbook();

        if (dt.Rows.Count > 0)
        {
            string sheetname = "Bảng tổng hợp";

            if (drnhacungcap.SelectedIndex > 0)
                sheetname = drnhacungcap.SelectedItem.Text;
            else sheetname = "Bảng tổng hợp";

            var sheet = workbook.CreateSheet(sheetname);

            #region CSS
            var headerLabelCellStyle = workbook.CreateCellStyle();
            headerLabelCellStyle.Alignment = HorizontalAlignment.LEFT;
            headerLabelCellStyle.BorderBottom = CellBorderType.THIN;
            headerLabelCellStyle.BorderLeft = CellBorderType.THIN;
            headerLabelCellStyle.BorderRight = CellBorderType.THIN;
            headerLabelCellStyle.BorderTop = CellBorderType.THIN;

            var headerLabelFont = workbook.CreateFont();
            headerLabelFont.FontName = "Times New Roman";

            headerLabelFont.FontHeightInPoints = 11;
            headerLabelFont.Color = HSSFColor.BLACK.index;
            headerLabelCellStyle.SetFont(headerLabelFont);

            //--------------------------

            var hsRight = workbook.CreateCellStyle();
            hsRight.Alignment = HorizontalAlignment.RIGHT;
            hsRight.BorderBottom = CellBorderType.THIN;
            hsRight.BorderLeft = CellBorderType.THIN;
            hsRight.BorderRight = CellBorderType.THIN;
            hsRight.BorderTop = CellBorderType.THIN;

            hsRight.SetFont(headerLabelFont);
            //-------------------
            var hsCenter = workbook.CreateCellStyle();
            hsCenter.Alignment = HorizontalAlignment.CENTER;
            hsCenter.BorderBottom = CellBorderType.THIN;
            hsCenter.BorderLeft = CellBorderType.THIN;
            hsCenter.BorderRight = CellBorderType.THIN;
            hsCenter.BorderTop = CellBorderType.THIN;

            hsCenter.SetFont(headerLabelFont);
            //-----------------------

            var hs1 = workbook.CreateCellStyle();
            hs1.Alignment = HorizontalAlignment.LEFT;

            var hsb = workbook.CreateFont();
            hsb.Boldweight = (short)FontBoldWeight.BOLD;
            hsb.FontName = "Times New Roman";

            hsb.FontHeightInPoints = 11;
            hsb.Color = HSSFColor.BLACK.index;
            hs1.SetFont(hsb);

            //-------------
            var hs2 = workbook.CreateCellStyle();
            hs2.Alignment = HorizontalAlignment.CENTER;

            var hsb2 = workbook.CreateFont();
            hsb2.Boldweight = (short)FontBoldWeight.BOLD;
            hsb2.FontName = "Times New Roman";

            hsb2.FontHeightInPoints = 18;
            hsb2.Color = HSSFColor.BLACK.index;
            hs2.SetFont(hsb2);
            //------------------------------
            var hs3 = workbook.CreateCellStyle();
            hs3.Alignment = HorizontalAlignment.CENTER;
            hs3.BorderBottom = CellBorderType.THIN;
            var hsb3 = workbook.CreateFont();
            hsb3.Boldweight = (short)FontBoldWeight.BOLD;
            hsb3.FontName = "Times New Roman";

            hsb3.FontHeightInPoints = 14;
            hsb3.Color = HSSFColor.BLACK.index;
            hs3.SetFont(hsb3);

            //----------------------------
            var hs4 = workbook.CreateCellStyle();
            hs4.Alignment = HorizontalAlignment.CENTER;

            hs4.BorderBottom = CellBorderType.THIN;
            hs4.BorderLeft = CellBorderType.THIN;
            hs4.BorderRight = CellBorderType.THIN;
            hs4.BorderTop = CellBorderType.THIN;

            var hsb4 = workbook.CreateFont();
            hsb4.Boldweight = (short)FontBoldWeight.BOLD;
            hsb4.FontName = "Times New Roman";

            hsb4.FontHeightInPoints = 11;
            hsb4.Color = HSSFColor.BLACK.index;
            hs4.SetFont(hsb4);

            #endregion

            //Start header-----------------------------------------------------------------------
            #region Header
            //tao hnag dau tien
            var rowIndex = 0;

            //cong ty
            var row = sheet.CreateRow(rowIndex);
            Cell r1c1 = row.CreateCell(0);
            r1c1.SetCellValue("Công ty cổ phần Xây Dựng Đức Anh");
            r1c1.CellStyle = hs1;
            r1c1.Row.Height = 400;

            CellRangeAddress cra = new CellRangeAddress(0, 0, 0, 4);
            sheet.AddMergedRegion(cra);

            //chi nhanh
            rowIndex++;
            row = sheet.CreateRow(rowIndex);
            r1c1 = row.CreateCell(0);
            r1c1.SetCellValue("Chi nhánh Trạm trộn Lâm Thao");
            r1c1.CellStyle = hs1;
            r1c1.Row.Height = 400;

            cra = new CellRangeAddress(1, 1, 0, 4);
            sheet.AddMergedRegion(cra);

            //tieu de bao cao
            string ngaythang = dlThang.SelectedIndex > 0 ? dlThang.SelectedItem.Text.ToUpper() + " " + dlNam.SelectedItem.Text.ToUpper() : "TỪ " + txtTuNgay.Text + " ĐẾN " + txtDenNgay.Text;
            //  string congtrinh = dlCongTrinh.SelectedIndex > 0 ? " - " + dlCongTrinh.SelectedItem.Text : "";
            rowIndex++;
            row = sheet.CreateRow(rowIndex);
            r1c1 = row.CreateCell(0);
            r1c1.SetCellValue("Báo Cáo Chốt Công Nợ Phải Thu " + ngaythang);
            r1c1.CellStyle = hs2;
            r1c1.Row.Height = 500;

           

            //khachhang
            //rowIndex++;
            //row = sheet.CreateRow(rowIndex);
            //r1c1 = row.CreateCell(0);
            //r1c1.SetCellValue(dlKhachHang.SelectedIndex > 0 ? "Khách hàng: " + dlKhachHang.SelectedItem.Text + congtrinh : dlLoaiKH.SelectedIndex > 0 ? "Loại khách hàng: " + dlLoaiKH.SelectedItem.Text : "");
            //r1c1.CellStyle = hs3;
            //r1c1.Row.Height = 500;

           

            //freeze panes
            cra = new CellRangeAddress(2, 2, 0, 12);
            sheet.AddMergedRegion(cra);

            //khachhang
            //rowIndex++;
            //row = sheet.CreateRow(rowIndex);
            //r1c1 = row.CreateCell(0);
            //r1c1.SetCellValue(dlKhachHang.SelectedIndex > 0 ? "Khách hàng: " + dlKhachHang.SelectedItem.Text + congtrinh : dlLoaiKH.SelectedIndex > 0 ? "Loại khách hàng: " + dlLoaiKH.SelectedItem.Text : "");
            //r1c1.CellStyle = hs3;
            //r1c1.Row.Height = 500;

            cra = new CellRangeAddress(3, 3, 0, 12);
            sheet.AddMergedRegion(cra);

            //freeze panes
        
            #endregion
            //End header-----------------------------------------------------------------------

            #region Header1-2

            //header2
            rowIndex++;
            rowIndex++;
            row = sheet.CreateRow(rowIndex);
            string[] header = { "Tháng", "Khách hàng", "Tổng dư kì trước", "Thành tiền tiền hàng ","Tổng TT kì trước","Tổng TT kì này",
                              "Tổng dư còn lại","Tổng thành tiền hàng"
                              };

            var cell = row.CreateCell(0);
            cell.SetCellValue("STT");
            cell.CellStyle = hs4;
            cell.Row.Height = 400;


            //tao tieu de cot
            for (int j = 0; j < header.Length; j++)
            {
                cell = row.CreateCell(j + 1);
                cell.SetCellValue(header[j].ToString());
                cell.CellStyle = hs4;
                cell.Row.Height = 500;

                sheet.AutoSizeColumn(j);

            }

            #endregion

            //ghi du lieu tung dong
            for (int i = 0; i < dt.Rows.Count; i++)
            {
                rowIndex++;
                row = sheet.CreateRow(rowIndex);
                cell = row.CreateCell(0);
                cell.SetCellValue((i + 1).ToString());
                cell.CellStyle = hsCenter;

                for (int j = 1; j <= dt.Columns.Count; j++)
                {
                    cell = row.CreateCell(j);

                    if (j == 3 || j == 4 || j == 5 || j == 6||j==7||j==8)
                    {
                        if (!dt.Rows[i][j - 1].ToString().Trim().Equals(""))
                        {
                            cell.SetCellType(CellType.NUMERIC);
                            cell.SetCellValue(double.Parse(dt.Rows[i][j - 1].ToString()));
                        }
                        else
                            cell.SetCellValue(dt.Rows[i][j - 1].ToString());
                        cell.CellStyle = hsRight;
                    }
                    else
                    {
                        cell.SetCellValue(dt.Rows[i][j - 1].ToString());

                        if (j <= 1)
                            cell.CellStyle = hsCenter;
                        else
                            cell.CellStyle = headerLabelCellStyle;
                    }
                    cell.Row.Height = 500;
                }

            }


            rowIndex++;
            row = sheet.CreateRow(rowIndex);

            cell = row.CreateCell(1);
            cell.SetCellValue("Tổng cộng");
            cell.Row.Height = 500;
            cell.CellStyle = hs4;

            string[] footer = { "D", "E", "F", "G", "H" };
            for (int k = 2; k <= 7; k++)
            {

                cell = row.CreateCell(k + 1);
                cell.SetCellValue(GV.FooterRow.Cells[k].Text.Trim().Equals("&nbsp;") ? "0" : GV.FooterRow.Cells[k].Text);
                cell.Row.Height = 500;
                cell.CellStyle = hs4;

            }
            //fix lai border
            r1c1 = row.CreateCell(0);
            r1c1.CellStyle = hs4;
            r1c1.Row.Height = 400;
            r1c1 = row.CreateCell(2);
            r1c1.CellStyle = hs4;
            r1c1.Row.Height = 400;



            for (int ik = 0; ik < 27; ik++)
            {
                sheet.AutoSizeColumn(ik);
            }


            //end sheet tong hop--------------------------
            using (var exportData = new MemoryStream())
            {
                workbook.Write(exportData);
                string filename = drnhacungcap.SelectedIndex > 0 ? drnhacungcap.SelectedItem.Text : "";
                string saveAsFileName = "BCChotCongNoThu-" + filename + " " + ngaythang + ".xls";

                Response.ContentType = "application/vnd.ms-excel";
                Response.AddHeader("Content-Disposition", string.Format("attachment;filename={0}", saveAsFileName));
                Response.Clear();
                Response.BinaryWrite(exportData.GetBuffer());
                Response.End();
            }
        }
    }
    protected void GV_RowDataBound(object sender, GridViewRowEventArgs e)
    {
        if (e.Row.RowType == DataControlRowType.DataRow)
        {
            if (e.Row.RowIndex == 0)
                e.Row.Style.Add("height", "50px");
        }
    }
}